Car will not idle when cold

Asked by oldguy61 Oct 15, 2013 at 02:13 PM about the 2001 Ford Explorer Sport 4WD

Question type: Maintenance & Repair

2001 Explorer Sport, will not idle when the outdoor temp. starts getting colder. Anything below 45 it will not idle at all until it warms up. I have to unplug the MAF sensor to get it to run untill it warms up. Then it won't idle until I plug the MAF back in. I replaced the MAF thinking that was the problem however it is not and I can't really figure it out reading the car repair manual either. Has anyone else had this problem with their Explorer?

3 Answers
65

Jarion answered 11 years ago

seems like its time for a tune up. I had a Explorer XLT years ago that would do this. Ended up being a vacuum leak on the engine. Take a good look at your vvacuum lines and getg a set of sparkplugs and wires.. MOTORCRAFT

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65

Jarion answered 11 years ago

Seafoam makes a aerosol can with a long plastic tube for throttle bodies and fuel injected vehicles. Remove the lines and shoot a good blast everywhere you can get it.. it works wonders.

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oldguy61 answered 11 years ago

I did change plugs and wires and that did not help this problem. Will try the Seafoam as soon as I can find it in an aerosol can.

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